World of Computer Networking Your CCNA start - Introduction "Dynamic Host Configuration Protocol (DHCP) and Domain Name

The video tutorial explains two application layer protocols, DHCP and DNS, which operate over UDP due to the limited number of packets exchanged between client and server. It details the packet exchange process in DHCP and DNS, highlighting the simplicity and efficiency of these protocols. The tutorial further explores the DNS process, including how DNS servers handle requests and resolve domain names through various name servers. The video concludes with a discussion on the necessity and functionality of DNS in network communication.

Why do DHCP and DNS protocols operate over UDP?

• Because UDP is faster than TCP

• Because UDP supports larger packet sizes

• Because there are not many packets exchanged

• Because UDP is more secure than TCP

In a typical DHCP exchange, how many packets are sent from the client?

• Two

• Four

• One

• Three

What is an optimized case in DHCP packet exchange?

• Only one packet from the client

• Two packets from the client and server

• Three packets from the client

• Four packets from the server

What type of request does a DNS client send to a DNS server?

• Multiple requests

• A single request

• A broadcast request

• A multicast request

Which DNS server is responsible for resolving specific domain names?

• Root name server

• Caching name server

• Top level domain name server

• Authoritative name server